How to say "而是他的仁慈之心" (ér shì tā de rén cí zhī xīn) in Chinese dialogue

érshìderénzhīxīn

but his merciful heart.

Grammar Patterns
INTERACTIVE SCRIPT TIMELINE
LINE 0117:37
shì
sūn
ruò
shuǐ

nor Sun Ruoshui,

LINE 0217:38
PLAYING SCENE
ér
shì
de
rén
zhī
xīn

but his merciful heart.

LINE 0317:40
de
zhè
fèn
rén

His mercy

Show Information
Source MediaTV Series
Season & EpisodeS1 E18
Timestamp17:38
TMDB ID262932